• Construction Engineering and Management
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• v.20 no.1
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• pp.22-25
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• 2019

• Construction Engineering and Management
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• v.20 no.1
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• pp.12-15
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• 2019

• Journal of the Korea institute for structural maintenance and inspection
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• v.16 no.6
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• pp.45-55
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• 2012

The road luminaires have been treated as subsidiary electric apparatuses in the road although they are indispensable facilities which people use the road safely. Because of this misunderstanding, there are not many researches on luminaire supports against the wind loads. Therefore, a typhoon has overturned or damaged many luminaire supports without having sufficient structural safeties. The purpose of this study is to review the current design criteria and to suggest the improvement of design methods based on the structural safety and compatible with the site conditions of luminaire supports. The stress concentration around the inspection hole, which causes the collapse of luminaire supports, is analyzed and stress reduction method is suggested with the improved design methods.

• Nuclear industry
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• v.19 no.11 s.201
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• pp.39-46
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• 1999

국내 가동 원전의 운전 연수가 증가함에 따라 장기 사용 원전의 안전성 향상과 수명 관리 연구가 진행되고 있다. 원전 수명 관리는 발전소 운전 안전성과 성능을 유지하면서 최적 경제 시점인 최적 수명까지 발전소를 운전하기 위한 제반 기술 활동이다. 적절한 수명 관리로 원전을 최적 수명까지 운전하더라도 발전소는 노화에 의해 운전 안전성이 영향을 받거나 저하되지 않아야 한다. 발전 설비의 노화에는 실제의 기기나 구조물이 경년 열화에 의해 노화되는 물리적 노화와 설계 기술의 발달과 새로운 안전 개념의 적용으로 기존 기술이 낙후하는 비물리적 노화로 구분할 수 있다. 물리적 노화는 기기$\cdot$구조물$\cdot$계통의 물리적 상태 변화로 성능을 저하시키고, 비물리적 노화는 발전소 계통의 안전 개념$\cdot$기준$\cdot$기술이 새롭게 변화되지 않은 것이다. 본 논문에서는 물리적 노화는 수명 관리 연구, 비물리적 노화는 안전성 관리의 측면에서 검토하였고, 두 분야의 국내외 연구 현황$\cdot$개념$\cdot$추진 방법$\cdot$상호 관계 등을 살펴보고, 상호 유기적인 관계를 보완 할 수 있는 제도적 장치 도입 및 적용 방안에 대해 논하였다.

• Proceedings of the KAIS Fall Conference
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• 2003.06a
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• pp.102-105
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• 2003

본 논문에서는 오리 사육장치를 제작하기 위하여 오리의 습성에 맞게 사육장치를 설계하였다. 또한 오리의 먹이는 음식물 쓰레기로 하고, 오리의 분뇨는 콘베이어 벨트로 수거하여 지렁이의 먹이로 사용함으로서 음식물 쓰레기를 줄이고, 지렁이에 의한 분변토를 얻을 수 있어 환경오염을 줄일 수 있는 새로운 시스템을 설계하였다. 사육장치의 프레임은 3차원 유한요소해석 코드인 ANSYS로 구조해석을 실시하여 안전성을 검토하였다.

• Journal of the Korean Institute of Landscape Architecture
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• v.51 no.4
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• pp.90-100
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• 2023

The construction safety policy of Korea requires safety reviews at design stages, which affect the perceptions and attitudes of the workers toward safety. Despite this heightened social interest in safety, there is no related research in the field of landscape architecture. This study entails a review of the status of landscape construction accidents in Korea and an assessment of landscape engineers' perception of construction safety climate and safety behaviors. A survey of landscape constructors and designers was performed, and the obtained data were statistically analyzed. The results indicate the following: (1) More than half of the accidents which are registered in CSI occurred in apartment houses ordered by the private sector in the type of facility and planting works in the landscaping process; (2) Landscape designers were better aware of safety than landscape constructors. Among them, safety attitude, work risk, work participation, and work pressure were statistically significant; Apart from the statistical significance, landscape designers recognized the importance of safety highly but they tended to have a relatively low perception of specific safety behaviors. (3) Lastly, landscape constructors attributed less importance to safety review during the design stage compared to other items.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.6
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• pp.1711-1717
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• 2008

This paper presents an investigation on behavior of a simplified composite I-beam bridge(SCIB) based on Korea Bridge Design Specifications(2005). Simple and continuous span SCIBs are considered to determine the design cross section. A structural analysis program, MIDAS(2006), is used to obtain the stress and deflection of the SCIB. In order to evaluate the safety of the design cross section, three-dimensional analysis is performed using ABAQUS(2007). According to the verification results from stresses and deflections of the design section, the new composite bridge are safely used for developments of reasonable and economic SCIB.

• Journal of the Korean Society of Hazard Mitigation
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• v.10 no.6
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• pp.17-25
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• 2010

This paper studied on stability of the U-channel segmental concrete bridge under vehicle-impact loads. The U-channel bridge has advantages in that it reduces an additional dead load and the edge beams role as a barrier. But it has a dangerous factor which collapses the bridge structure when the edge beams are ruptured. Therefore, it is necessary to verify behaviors of the bridge system under vehicle-impact loads. Static and dynamic vehicle impact simulations were carried out on the basis of AASHTO LRFD design specifications. In case of the static analysis, equivalent static loads specified in the AASHTO codes are loaded on the edge beams and in case of the dynamic analysis, FEM vehicle models are modeled by applying the dynamic test specifications of AASHTO codes. As a result, it is shown that U-channel bridge system has sufficient safety against static and dynamic impact loads specified in the AASHTO LRFD design specifications.

• Proceedings of KOSOMES biannual meeting
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• 2017.11a
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• pp.12-12
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• 2017

연안어선의 선형적 특성에 대한 검토를 수행 하여 적합한 선형에 대한 정보를 제공한고자 한다. 또한 선수 벌브설치로 인한 저항성능과 내항성능에 대한 고찰을 통해 연안 어선의 선형설계 개선 사항에 대해서 제시하여 보고자 한다.

• Journal of Aerospace System Engineering
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• v.16 no.1
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• pp.81-85
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• 2022

In this study, we conducted a structural design and analysis of air intake of aircraft engine using composite materials. First, an investigation on structural design requirement of target structure was carried out. The distributed pressure load and acceleration condition was applied to structural design. To evaluate the structural design result, finite element analysis was carried out. The stress, deflection and buckling analysis for structural safety evaluation was performed. Finally, it was confirmed that the air intake through structural analysis is safety.